Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 63:45
1998 0 48:00
1999 1 79:45
2000 1 114:15
2001 2 130:55
2002 4 311:10
2003 4 434:00
2004 5 539:15
2005 28 741:30
2006 3 671:30
2007 8 742:30
2008 6 700:00
2009 14 629:45
2010 4 570:15
2011 2 520:15
2012 31 543:15
2013 8 410:30
2014 8 500:15
2015 7 683:45
2016 14 688:45
2017 8 671:00
2018 12 739:00
2019 10 737:00
2020 9 426:55
 
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